Adding device.



Patented Janl7, 1919.

2 SHEETS-SHEET l- 1|Illllnlll-lll'blllj Z A J 5 6 006099602 OOOOOOOOOOnL] G U R. REINBOLD.

ADDING DEVICE.

n'munm. vusnmarau. a. 0.

APPLICATION FILED SEPT. 14. 1911.

R. Ransom.

ADDING DEVICE. f

APPLICATION FILED SEPT. 14. 1917. v

' Patented Jan. 7,-1919.

2 SHETSSHEET 2.

ROBERT REINBOLD, OF MINNEAPOLIS, MINNESOTA.

ADDING DEVICE.

Specification of Letters Patent.

Application filed September 14, 1917. Serial No. 191,475.

To all whom it may concern:

Be it known that I, ROBERT REINBOLD, a citizen of the UnitedStates,residing at Mmneapolis, in the county of Hennepin and.

State of Minnesota, have invented a new and useful Improvement in AddingDevices, of which the following is a specification.

My invention relates to adding machines and more particularly to adevice which is of extremely simple construction and adapted to beoperated bya downward stroke which is very similar to the natural way ofwriting. The apparatus is made up of a small number of simple partsandthe device as a whole, is of small dimensions so that it can be easilycarried in the pocket ofthe user.

In use of the device, it can be laid upon a book over aseries of figuresor numbers which are being added so that the upper edge of the deviceacts as a rule which extends transversely below the last series ofnumbers added in the machine. The rule edge of the device thus assistingmaterially the operation of the machine and preventing errors whichcommonly-occur in the use of adding machines such as duplications, etc.

My device is provided with an extra series of figure wheels which areadapted to illustrate the last amount or series of numbers added by themachine, thereby prevent- I ing an error by addingthe same amount twicein the device.

The above features together with other obj sets and combination of partswill be more fully described and set forth inthe follow.- ingspecification and claims:

In the drawing which forms part ofthis specification Figure 1 is a planview of my adding device, a portion of which is broken away. I

Fig. 2 is a side elevation of the same. Fig. 3 is a sectional sideelevation of Fig. 1 taken on the line 3-3.

Fig. A is an enlarged plan view of a portion of the device showing thecover removed.

Fig. 5 is an enlarged cross section of Fig.-

Fig. 8 is an enlarged vertical section taken on the line 88 of Fig.4.

Fig. 9 is a similar section as Fig. 8 show ing the parts in a differentposition.

Fig. 10 is a section of a portion of the device taken on the line 1010of Fig. 1.

Fig. 11 is an enlarged section on the line l111 of Fig. 2 illustrating adetail of a portion of the device.

In the drawing, A represents an adding machine which is of a flat thinnature and of small dimensions so that it can be easily carried fromplace to place for use in adding columns of figures in ledgers and otherbooks of accounts where 1t is desired to use anadding machine to add along column of figures.

The adding device A is provided with a cover 1 and a bottom or baseportion 2, the bottom 2 is adapted to be held in place by means of thescrews 3. The adding device A is formed with a projecting rule portion4: which is formed by extending the upper end of the bottom or baseportion 2. The rule portion 4 of the adding device A is formed with aseries .of lines 5 on its upper surface which can be gaged as a rule sothat the portion 4|: can be used to perform the functions of theordinary rule which so often is used in bookkeeping. It is obvious thatany desired characters or gage can be marked on the upper surface of therule portion 4.

The adding device A is made up of a series of shafts 6 which are heldparallel to each other in the cover 1 by means of the end bearings 7 and8 and the bearing 9.

The bearings 7, 8 and 9 extend transversely across the inside of thecover 1 and the bearing portion 9 being positioned a little below theupper end of the adding device A. The bearing 9 is adapted to rest onthe base portion 2 and secured thereto by means of the screws 10. Thescrews 3 hold the base 2 to the bearing portions 7 and 8. The shafts 6extend longitudinally and parallel to each other from one end to theother in the adding device A and each is formed with a spiralgroove 11on the enlarged portion of the same. The adding device A is providedwith seven longitudinal shafts 6 but it is ob vious that any numbereanbe used so as to add any number of columns of figures as the device Arequires one shaft 6 for each column of figures being added.

Slides 12 or carriages are provided for each of the shafts 6 and areformed with a head or sliding nut portion 13 which is adapted PatentedJan. 7, 1919.

to encircle the shaft 6. The lower portion of the shaft encircling partof the head 13 is formed thin enough so that it can be bent inward toform a key 14 which is adapted to engage in the groove 11,, of the shaft6. The slides 12 are formed with rearwardly extending portions 15 whichare formed with notches or openings 16. Each slide 12 has eleven notchesformed in the upper surface thereof, ten of which are exposed to viewthrough the longitudinal slots 17 formed in the cover 1 of the addingdevice A and the portion of the cover 1 between the portions 15 of theslides 12 are marked with numerals from the bottom up from one to ninein consecutive order. The lowermost notch 16 which is exposed throughthe slot 17 having no corresponding numeral on the surface of the cover1 as it is understood that this would be zero. The head 13 of the slide12 is formed with an upwardly projecting lug 18 which acts as a guidefor the slide 12 sliding in the slots 17 and preventing the turning ofthe slide 12 when the same is operated.

A coil spring 19 is carried by each of the shafts 6 and is adapted tohold the slide 12 forward in normal position as is illustrated in Fig. 3to the head portion 13 engaging against the transverse guide 9. Therearwardly extending portions 15 of the slides 12 are formed withbeveled surfaces 20 and are adapted to engage the guides 21 which areapproximately dove-tail shaped which form supports for the rear ends ofthe slides 12. The supports 21 are positioned transversely across theadding machine A and are rigidly secured to the cover 1 of the same.

The guides 21 or supports are held to the cover 1 by means of the wedgeshaped portion 22 and the forward end of the slides 12 are slidably heldby means of the head 13 on the shaft 6. The rear end of the slides orcarriages is supported by means of the supports 20.

A series of fiat springs 23 which are secured to the top of the cover 1by means of the screws 24, are adapted to lie flat on the surface of thecover and parallel to each other. The springs 23 are formed on theirforward end with engaging hooks 25 which. are adapted to engage in thenotches 16 so as to hold the slides 12 when they are engaged andoperated or slid in the slots 17. The springs 23 are formed with arecess portion 26 on their lower side in which a releasing bar 27 isadapted to lie. The releasing bar 27 is of a flat thin nature extendingtrans versely under the springs 23 and adapted to lie normally flatagainst the surface of the cover 1. The bar 27 is pivoted on its rearside on either end in the ears 28 which extend upwardly from thecover 1. An oper ating lever 29 is rigidly secured to the right hand endof the bar 27 and is adapted to turn the bar on its pivot points when itis depressed thereby raising the engaging ends 25 of the springs 23 outof engagement with the openings 16 to release the slides 12.

When the operating lever 29 is depressed, all of the springs 23 areraised or released simultaneously, so that if any of the slides whichhave been drawn down, will be released by merely depressing the lever29. When the engaging springs 23 release the slides 12, the coil spring19 will return them to normal position automatically, as is illus tratedin Fig. 3. y

The upper end of the shaft 6 is reduced in size and carries a set offigure wheels B which are rigidly secured to the shaft 6 by means of akey 30. The figure wheels B have indices from one to zero on theircylindrical surface which are read through the openings 31 formed in thecover 1.

A second series of figure wheels C are freely journaled on the shaft 6and have a cam surface D together with a ratchet tooth wheel E formedintegral therewith. The cam shaped wheel D and ratchet tooth wheel Eextend longitudinally from the figure wheels C and each have a surfaceof approximately the same width as the surface of the figure wheels C.The ratchet tooth surface E of the figure wheels C lie adjacent thefigure wheels B and the cam surface D extends between the wheels C andthe ratchet tooth wheel E.

A pawl 32 is pivotally secured at 33 to each of the figure wheels B andhas an engaging end 34 which is adapted to engage the ratchet teeth 35of the portions E and is held into engagement with the same by means ofthe fiat depressing springs 36 which are secured to the wheels B bymeans of the screws 37. A spring engaging dog 38 having a spring 39 ispositioned beneath each of the ratchet tooth wheels E and is adapted toengage the teeth 35 of the wheels E so as to hold them in positionagainst rotation in a reverse di rection, thus the wheels E and thecamshaped wheel D and figure wheels C can only turn in one direction asis illustrated by the arrows in Figs. 6 and 7, while the figure wheels Bwhich are rigidly secured to the shaft 6 will turn in either direction,as is illustrated by the arrows in Fig. 5.

A carry-one mechanism F is secured to the upper surface of thetransverse support 9 and is formed with a flat forwardly extendingspring finger 40 which carries a roller 41 and a spring engaging pawl 42on its forward end. The roller 41 is pivotally secured to the rigiddepending arms 43 which is formed integral and extends downward from theside of the spring 40. The roller 41 is adapted tobear on the surface 44of the cam wheel D. The spring pawl Lancaster;

is held into engagement with the teeth 35 i of the ratchet tooth wheelsE by means of the springs 44. The camwheel D is formed with an abruptlycut-away portion 45.

The carry-one mechanism F is adapted to carry a unit from one shaft tothe next higher adjacent shaft, when the figure wheels C pass throughnine tozero and this is accomplished 'by means of the springs 40 whichdepress or hold the roller41under spring pressure against the surface 44of the cam wheel D. When the figure wheels C pass through nineto'zero,the cam wheel 7 D will beiin the position illustrated in Fig.

9, thus allowing the wheel 41 to drop into the cutaway portion 45 of thecam B and simultaneously turning the next adjacent fig ure wheel O bymeans of the pawl 42 which engages the adjacent ratchet tooth wheel Eand turnsit one unit, thereby adding one digit to the next higheradjacent figure wheels C. As the cam D is rotated from the positionillustrated in Fig. 9 in the direction of the arrows during theoperation of the device A, the cam surface 41 will carry the wheel 40 upinto the position illustrated in Fig. 8 ready to again carry a digit tothe next higher shaft. This is repeated as often as the shafts 6 arerotated to operate the springs 41 when the digits are added in theadding machine A. The springs 40 are strong enough to depress the pawl42and theroller 41 and turn the ratchet wheels E which are freelyjournaled on the shaft 6 and are formed integral with the cam wheels Dand the figure wheels C.

The dogs 38 hold the figure wheels C in position against backwardrotation but allows them to rotate in the direction of the. arrows asillustrated. The indice or figure wheels C are visible through theopenings 46 formed in the cover 1.

In the operating of the adding machine A, it is placed preferablydirectly on the column of figures to be added with the ruled portion 4directly below the series of numbers to be added, then by means of astylus,

to the left of the device A, making it easy to select the desiredcolumn. The numbers on the surface ofthe cover 1 along side of thenotches 16 act as a guide so that the numbers which are desired to beadded in the machine can be quickly selected and the slides 12 drawndown by the operating tool.

drawn down position so that the last series of numbers or figures addedin the adding machine A, will appear on the figure wheels B through theopenings 31. The adding machine A is then moved down to the next seriesof numbers and the releasing lever 29 depressed, releasing the slides 12which will return to normal position and thereby automatically returnthe indices on the number wheels B to zero but leaving the total amountadded in the machine A on the number wheels C which are visible throughthe openings 46. With this construction of device A one is less liableto make an error by adding the same series of numbers twice and even ifthey are interrupted during operation of the device, the last figuresadded can be left on the series of wheels B and they can quicklydeterminewhere they left off in adding a column of figures. The wheels Bthus being a check on the last numbers added. The rule portion 4 forms aconvenient guide and instrument which is of a valuable nature to thebookkeeper. The figure wheels C can be returned to zero by addingfigures in the device A to return the total indice to zero. In operationof the device A, the carry-one mechanism F operates automatically fromone shaft to theone next adjacent higher and overcomes the features inwhich gear wheels are used to make up a carry-one mechanism and therebycausing considerable force to operate the carry-one mechanism. No extraforce being necessary to operate the mechanism F as the spring 40 isadapted to depress the operating pawl.

The springs 40vare held by screws to the transverse supports 9 and thesprings are preferably formed from one single piece of material so thatthey are all secured together on the support 9. The springs 40 extendforward as fingers from the support 9.

The figure wheels B assist the operatorin determining at all times inoperation of the device A, that he'is addingthe right amount in thedevice for the reason that when an amount has been set up in the deviceA, it will appear through the openings 31 over the number wheels B, thusthe operator can at a glance, see the amount, set up as it would appearin writing, he is adding in the device A before he releases the springs23 to return the slides 12 back to normal position and the number wheelsB to zero. The lowermost notch 16 appearing through the slots 17 of theslides 12, is the erating the device A, it is not necessary to operatethe slides in the column where a zero occurs in adding. The extremesimplicity of the device A together with the downward stroke inoperation, gives a device which is easy to operate and practical in use.

I have illustrated one particular form of construction of adding machinebut I desire to have it understood that this device is only illustrativeand that the invention can be carried out by other means and applied toother uses within the scope of the following claims:

1. In a device of the class described, a casing having a series oflongitudinal open ings, a series of longitudinal shafts freely journaledin said casing beneath said openings, a carriage slidably secured toeach of said shafts, means formed on said carriage for closing saidlongitudinal openings when in. one position, said closing means havingengaging notches formed therein which can be engaged to move saidcarriages longitudinally, means on said shafts and carriage for rotatingsaid shafts when said carriage is moved longitudinally, indicating meanson each of said shafts and transfer means adapted to be operatedautomatically by spring pressure to transfer the count of a lower orderindicating means to one of a higher order.

2. In a device of the class described, the combination of a casinghaving a series of slots, a series of shafts below said slots in saidcasing, a carriage slidably secured to each of said. shafts and adaptedto close said slots in one position, means on said shafts and carriagefor rotating said shafts when said carriage is moved longitudinally,transfer means adapted to be operated automatically by spring pressureto carry the count of a lower order indicating means to one of a higherorder, and indication means on each of said shafts.

3. In a device of the class described, a casing having a series oflongitudinally extending openings, a series of shafts below saidopenings freely journaled in said casing, indicating means on each ofsaid shafts, automatically operated transfer means for said indicatingmeans, a carriage slidably secured to each of said shafts, means on saidcarriage for closing said openings when said carriages are in oneposition in said casing, engaging means formed in said opening closingmeans and means on said shafts and carriage for rotating said shaftswhen said engaging means is engaged and said carriage moved in alongitudinal direction.

4,. In a device of the class described, having a series of shafts freelyjournaled therein, slides for engaging said shafts spirally to rotatesaid shafts in both directions when said slides are reciprocated,engaging means formed in said slides which is adapted to re ceive asuitable means to engage said slides at diiferent points to move saidslides longitudinally, and indicating means secured to said shafts toindicate the total and last amount added in said device.

5. In a device of the class described having a series of shafts freelyjournaled therein, slides for spirally engaging said shafts to rotatesaid shafts when said slides are moved longitudinally, a series ofnumbers positioned on said device, said slides having notches formedtherein opposite each of said numbers, when said slides are ininoperative position, and indicating means rigidly and freely journaledon said shafts to indicate the last and total amount added in saiddevice, said rigidly secured indicating means being adapted to return tozero when said slides are released and moved back to normal position.

6. In a device of the class described, having a series of shafts freelyjournaled therein, a series of figure wheels rigidly secured to saidshafts, a second series of figure wheels freely journaled on saidshafts, slidable means mounted on said shafts for rotat ing the same,means for holding said slidable means in drawn down position so thatsaid series of figure wheels rigidly secured to said shafts willindicate the last amount added in the device, means for releasing saidholding means and means for returning the released slidable means to setsaid rigidly secured figure wheels so that their indice will read zero,substantially as described.

7. In an adding device having a series of longitudinally extendingopenings, shafts freely journaled in said device below said openings,slides having means for engaging said shafts to rotate the same whensaid slides are moved longitudinally, means formed on said slides tohold them against rotation when moved longitudinally, indi cating meanssecured to said shafts and eX- tensions formed on said slides to closesaid longitudinally extending openings in said device when said slidesare in inoperating position, to conceal said shafts for the purposesspecified.

8. In a device of the class described, a casing having a series oflongitudinal openings, a series of shafts freely journaled in saidcasing beneath said openings, slides for spirally engaging said shaftsto rotate the same in both directions, means on said slides for closingsaid openings, spring means on said shafts for holding said slides withsaid opening closing means normally in closed position, said openingclosing means having a series of notches formed therein which may beengaged to operate said slides, spring means for engaging said notcheswhen said slides are moved longitudinally, means for releasing saidnotch engaging means, indicating means rigidly secured on said shaftsand indicating means freely journaled on said shafts, whereby when saidslides are moved longitudinally said rigidly secured indicating meanswill be rotated from zero to indicate the amount added in said device,and when said notch engaging means is released, said spring means willautomatically push said slides back to nor mal position, rotating saidrigidly secured wheels back to zero, said freely journaled wheels beingadapted to rotate in one direction only with said rigidly secured wheelsto add and indicate the total amount in said device.

9. In a device of the class described, having a series of longitudinalshafts freely journaled therein, slides having means for engaging saidshafts to rotate the same when said slides are moved longitudinally, aseries of indice wheels rigidly secured to said shafts, a second seriesof indice wheels freely journaled on said shafts, and means for holdingsaid series of freely journaled indice wheels so as to rotate in onedirection only.

' 10. In a device of the class described, having a series oflongitudinal and parallel shafts freely journaled in the casing of saiddevice, indice wheels rigidly secured to said shafts, second indicewheels freely journaled to said shafts, ratchet wheels and a cam surfaceformed integral with said freely journaled indice wheels, means forengaging said ratchet wheels to allow the rotation of said freelyjournaled wheels in one direction only, spring means pivotally securedto said rigidly secured. indice wheels for engaging said ratchet wheelsto rotate the same when said rigidly secured indice wheels are rotatedby said shafts, spring arms having means or engaging the cam surface onone shaft and the teeth of the ratchet wheels on the next adjacentshafts so as to carry-one from the indice wheels on one shaft to thenext adjacent higher shafts, and means for rotating said shaft,substantially as described.

11. In a device of the class described having, a series of freelyjournaled and longitudinally parallel shafts, slidable means forrotating said shafts, said slidable means having notches formed therein,spring means for engaging said notches, means for releasing said notchengaging means, indice wheels rigidly secured to said shafts, secondindice wheels freely journaled to said shafts and a spring operated pawlpivotally secured to said rigidly secured indice wheels for rotatingsaid freely journaled indice wheels in one direction only.

12. In a device of the class described, having a series of shafts freelyjournaled therein, slides for spirally engaging said shafts to rotatethe same, indicating means rigidly secured and freely journaled on eachof said shafts, said rigidly secured indicating means being adapted toindicate the last amount added in said device and said freely journaledindicating means being adapted to indicate the total amount added insaid device, said slides having notches formed therein, means forengaging said notches when said slides are moved longitudinally, meansfor releasing said notch engaging means and spring means forautomatically moving said slides longitudinally on said shafts in onedirection to rotate said shafts in a backward direction and toautomatically bring said rigidly secured wheels back to indicate zerowhen released.

13. In a device of the class described having a series of shafts freelyjournaled therein, slides or carriages for engaging said shafts spirallyto rotate said shafts in both directions when said slides or carriagesare reciprocated and indicating means directly secured to said shafts,to indicate the total and last amount added in said device.

14. In a device of the class described having, a series of shafts freelyjournaled there in, means for engaging said shafts spirally to rotatethe same in both directions when said means is reciprocated, means forautomatically moving said shaft rotating means in a backward directionwhen said engaging means is released from operating position, indicatingmeans freely secured to said shafts and indicating means rigidly securedto said shafts, said freely secured indicating means being adapted toindicate the total amount added in said device, and said rigidly securedindicating means being adapted to indicate the last amount added in saiddevice.

15. In a device of the class described having, a series of shafts freelyjournaled therein, means for engaging said shafts spirally to rotate thesame in both directions when said engaging means is reciprocated, meansfor concealing said shafts when said shaft engaging means is ininoperative position, means for engaging said shaft concealing means tohold the same in drawn down position, means for releasing said shaftconcealing means, means for moving said concealing means and said shaftengaging means back to normal position automatically when said shaftengaging means and said concealing means are released, indicating meanson each of said shafts and means for transferring the count of a lowerorder indicating means to one of a higher order.

ROBERT REINBOLD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

